Advertisements
Advertisements
प्रश्न
List some of the common wastes produced in mining operation and mention how these can be reused.
उत्तर
Common wastes produced in mining operation:
Coal, Dust, Iron, Copper, Zinc, etc.
Reusing of wastes produced in mining operation:
During operation of getting minerals, a large quantity of waste material is produced. This waste material is called mine tailing. It is the left over. The mine tailing can be mixed with materials to produce tiles and masonry cement.
APPEARS IN
संबंधित प्रश्न
Which of the following is biodegradable?
Which of the following is biodegradable?
The steps required for the conversion of kitchen garbage into manure are given below in a jumbled form.
(i) Put garbage in a pit
(ii) Cover the bottom of the pit with sand
(iii) Cover the pot loosely with a gunny bag or grass
(iv) Add worms
Which of the following shows the correct sequence of the above steps?
To what use can you put the following kind of garbage and how?
rotting smelly garbage
To what use can you put the following kind of garbage and how?
dry leaves collected in a garbage
To what use can you put the following kind of garbage and how?
old newspapers
Read the poem written below and then answer the questions from the information gathered from the book or elsewhere.
Name the two kinds of waste that need to be separated from each other in two different waste bins.
Put a tick (√) against the garbage items given in Table 16.1 which could be converted into manure. Put a cross (×) against the others.
| Garbage Items | Make manure or not | |
| (i) | Eggshells | |
| (ii) | Straw | |
| (iii) | Dry flowers | |
| (iv) | Pebbles | |
| (v) | Broken pieces of glass | |
| (vi) | Nails and screws | |
| (vii) | Plastic bangles | |
| (viii) | Leftover food | |
| (ix) | Steel broken vessel | |
| (x) | Dead animals |
Which of the following is non-biodegradable?
Define the following term:
Waste
